/Engine/Source/Editor/AnimationBlueprintLibrary/Public/AnimationBlueprintLibrary.h
Checks whether or not the given Bone Name exist on the Skeleton referenced by the given Animation Sequence
static void DoesBoneNameExist ( [UAnimSequence](API\Runtime\Engine\Animation\UAnimSequence) * AnimationSequence, [FName](API\Runtime\Core\UObject\FName) BoneName, bool & bExists )